SigmaHQ/rules/windows/builtin/win_possible_dc_shadow.yml
2021-07-06 15:25:32 +02:00

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YAML

title: Possible DC Shadow
id: 32e19d25-4aed-4860-a55a-be99cb0bf7ed
description: Detects DCShadow via create new SPN
status: experimental
author: Ilyas Ochkov, oscd.community, Chakib Gzenayi (@Chak092), Hosni Mribah
date: 2019/10/25
modified: 2021/07/06
references:
- https://github.com/Neo23x0/sigma/blob/ec5bb710499caae6667c7f7311ca9e92c03b9039/rules/windows/builtin/win_dcsync.yml
- https://twitter.com/gentilkiwi/status/1003236624925413376
- https://gist.github.com/gentilkiwi/dcc132457408cf11ad2061340dcb53c2
- https://blog.alsid.eu/dcshadow-explained-4510f52fc19d
tags:
- attack.credential_access
- attack.t1207
logsource:
product: windows
service: security
detection:
selection1:
EventID: 4742
ServicePrincipalNames|contains: 'GC/'
selection2:
EventID: 5136
AttributeLDAPDisplayName: servicePrincipalName
AttributeValue|startswith: 'GC/'
condition: selection1 OR selection2
falsepositives:
- Exclude known DCs
level: high